<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

/**
 * Think 命令行模式公共函数库
 * @category   Think
 * @package  Common
 * @author   liu21st <liu21st@gmail.com>
 */

// 错误输出
function halt($error) {
	exit($error);
}

// 自定义异常处理
function throw_exception($msg, $type='ThinkException', $code=0) {
	halt($msg);
}

// 浏览器友好的变量输出
function dump($var, $echo=true, $label=null, $strict=true) {
	$label = ($label === null) ? '' : rtrim($label) . ' ';
	if (!$strict) {
		if (ini_get('html_errors')) {
			$output = print_r($var, true);
			$output = "<pre>" . $label . htmlspecialchars($output, ENT_QUOTES) . "</pre>";
		} else {
			$output = $label . print_r($var, true);
		}
	} else {
		ob_start();
		var_dump($var);
		$output = ob_get_clean();
		if (!extension_loaded('xdebug')) {
			$output = preg_replace("/\]\=\>\n(\s+)/m", "] => ", $output);
			$output = '<pre>' . $label . htmlspecialchars($output, ENT_QUOTES) . '</pre>';
		}
	}
	if ($echo) {
		echo($output);
		return null;
	}else
	return $output;
}

// 区间调试开始
function debug_start($label='') {
	$GLOBALS[$label]['_beginTime'] = microtime(TRUE);
	if (MEMORY_LIMIT_ON)
	$GLOBALS[$label]['_beginMem'] = memory_get_usage();
}

// 区间调试结束，显示指定标记到当前位置的调试
function debug_end($label='') {
	$GLOBALS[$label]['_endTime'] = microtime(TRUE);
	echo '<div style="text-align:center;width:100%">Process ' . $label . ': Times ' . number_format($GLOBALS[$label]['_endTime'] - $GLOBALS[$label]['_beginTime'], 6) . 's ';
	if (MEMORY_LIMIT_ON) {
		$GLOBALS[$label]['_endMem'] = memory_get_usage();
		echo ' Memories ' . number_format(($GLOBALS[$label]['_endMem'] - $GLOBALS[$label]['_beginMem']) / 1024) . ' k';
	}
	echo '</div>';
}

// 全局缓存设置和读取
function S($name, $value='', $expire='', $type='',$options=null) {
	static $_cache = array();
	alias_import('Cache');
	//取得缓存对象实例
	$cache = Cache::getInstance($type,$options);
	if ('' !== $value) {
		if (is_null($value)) {
			// 删除缓存
			$result = $cache->rm($name);
			if ($result)
			unset($_cache[$type . '_' . $name]);
			return $result;
		}else {
			// 缓存数据
			$cache->set($name, $value, $expire);
			$_cache[$type . '_' . $name] = $value;
		}
		return;
	}
	if (isset($_cache[$type . '_' . $name]))
	return $_cache[$type . '_' . $name];
	// 获取缓存数据
	$value = $cache->get($name);
	$_cache[$type . '_' . $name] = $value;
	return $value;
}

// 快速文件数据读取和保存 针对简单类型数据 字符串、数组
function F($name, $value='', $path=DATA_PATH) {
	static $_cache = array();
	$filename = $path . $name . '.php';
	if ('' !== $value) {
		if (is_null($value)) {
			// 删除缓存
			return unlink($filename);
		} else {
			// 缓存数据
			$dir = dirname($filename);
			// 目录不存在则创建
			if (!is_dir($dir))
			mkdir($dir);
			return file_put_contents($filename, strip_whitespace("<?php\nreturn " . var_export($value, true) . ";\n?>"));
		}
	}
	if (isset($_cache[$name]))
	return $_cache[$name];
	// 获取缓存数据
	if (is_file($filename)) {
		$value = include $filename;
		$_cache[$name] = $value;
	} else {
		$value = false;
	}
	return $value;
}

// 取得对象实例 支持调用类的静态方法
function get_instance_of($name, $method='', $args=array()) {
	static $_instance = array();
	$identify = empty($args) ? $name . $method : $name . $method . to_guid_string($args);
	if (!isset($_instance[$identify])) {
		if (class_exists($name)) {
			$o = new $name();
			if (method_exists($o, $method)) {
				if (!empty($args)) {
					$_instance[$identify] = call_user_func_array(array(&$o, $method), $args);
				} else {
					$_instance[$identify] = $o->$method();
				}
			}
			else
			$_instance[$identify] = $o;
		}
		else
		halt(L('_CLASS_NOT_EXIST_') . ':' . $name);
	}
	return $_instance[$identify];
}

// 根据PHP各种类型变量生成唯一标识号
function to_guid_string($mix) {
	if (is_object($mix) && function_exists('spl_object_hash')) {
		return spl_object_hash($mix);
	} elseif (is_resource($mix)) {
		$mix = get_resource_type($mix) . strval($mix);
	} else {
		$mix = serialize($mix);
	}
	return md5($mix);
}

// 加载扩展配置文件
function load_ext_file() {
	// 加载自定义外部文件
	if(C('LOAD_EXT_FILE')) {
		$files =  explode(',',C('LOAD_EXT_FILE'));
		foreach ($files as $file){
			$file   = COMMON_PATH.$file.'.php';
			if(is_file($file)) include $file;
		}
	}
	// 加载自定义的动态配置文件
	if(C('LOAD_EXT_CONFIG')) {
		$configs =  C('LOAD_EXT_CONFIG');
		if(is_string($configs)) $configs =  explode(',',$configs);
		foreach ($configs as $key=>$config){
			$file   = CONF_PATH.$config.'.php';
			if(is_file($file)) {
				is_numeric($key)?C(include $file):C($key,include $file);
			}
		}
	}
}